First, connect your account to Short.io.
Go to the Connected Accounts page in InfluenceKit
Click on 'Add Account', and then select Short.io
Enter your Short.io domain as the Account ID, and enter your Short.io secret key as the API key. You can find that here: https://app.short.io/settings/integrations/api-key
(NOTE: Make sure you generate a secret key, not a public key)
To add a Short.io link as a deliverable in InfluenceKit, follow these steps: just paste the short link in as a deliverable: